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Microplastics as an Emerging Environmental Pollutant in Agricultural Soils: Effects on Ecosystems and Human Health
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This review examines how microplastics enter and move through agricultural soil ecosystems, affecting soil properties, nutrient cycling, and the organisms that live in and depend on healthy soil. Researchers found that microplastics can alter key biogeochemical processes and interact with co-existing pollutants like heavy metals and pesticides, potentially compounding their harmful effects. The study highlights the need for prevention and control strategies as microplastic contamination of farmland becomes an increasingly recognized environmental and potential human health concern.
Microplastics are <5 mm in size, made up of diverse chemical components, and come from multiple sources. Due to extensive use and unreasonable disposal of plastics, microplastics have become a global environmental issue and have aroused widespread concern about their potential ecological risks. This review introduces the sources, distribution and migration of microplastics in agricultural soil ecosystems. The effects of microplastics on soil physicochemical properties and nutrient cycling are also discussed. Microplastics can alter a series of key soil biogeochemical processes by changing their characteristics, resulting in multiple effects on the activities and functions of soil microorganisms. The effects of microplastics on soil animals and plants, the combined effects of microplastics and coexisting pollutants (organic pollutants and heavy metals), and their potential risks to human health are also discussed. Finally, prevention and control strategies of microplastic pollution in agricultural soil ecosystems are put forward, and knowledge gaps and future research suggestions about microplastic pollution are given. This review improves the understanding of environmental behavior of microplastics in agricultural soil ecosystems, and provides a theoretical reference for a better assessment of the ecological and environmental risks of microplastics.
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This review examines how microplastics accumulate in agricultural soils from sources like plastic mulch, sewage sludge, and atmospheric deposition. Researchers found that these particles can disrupt soil microbial communities, harm plant health, and potentially enter the human food chain. The study highlights the urgent need for mitigation strategies to address this growing but often overlooked form of pollution in farmland.
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This review examines how microplastic and nanoplastic contamination in agricultural soils affects soil organisms and ecological functions. Researchers found that plastics enter farmland through multiple pathways including plastic mulch, sewage sludge, and irrigation water, and once present they alter soil properties and exhibit toxic behavior toward soil biota. The study identifies significant knowledge gaps about the long-term impacts of microplastic accumulation on agricultural productivity and food safety.
Formation, behavior, properties and impact of micro- and nanoplastics on agricultural soil ecosystems (A Review)
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This review provides a comprehensive look at how micro and nanoplastics affect agricultural soil ecosystems, covering their sources, movement through soil, and impacts on soil organisms and crop growth. The authors found that microplastics can alter soil structure, reduce beneficial microbial activity, and affect plant nutrient uptake. These changes to farmland soils could ultimately threaten food security and introduce microplastics into the human food supply.
Microplastics in Agricultural Soils: Sources, Fate, and Interactions with Other Contaminants
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This review examines how microplastics enter farmland through irrigation, fertilizers, and plastic mulch, and how long-term farming practices affect their spread and aging in soil. The paper highlights that microplastics can either increase or decrease the toxicity of co-existing pollutants like pesticides and heavy metals depending on how strongly each contaminant binds to soil versus plastic particles.
Exploring the Impact of Micro-plastics on Soil Health and Ecosystem Dynamics: A Comprehensive Review
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This review examines how microplastics affect soil health, finding that they alter soil structure, water retention, and the organisms that live in soil. Microplastics can carry toxic substances into soil and interact with other pollutants to amplify harmful effects on earthworms and soil microbes. Since healthy soil is essential for growing safe food, microplastic contamination of agricultural land could have long-term consequences for the food supply and human health.
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